Sigma-Aldrich Corporation Announces Webcasts of Annual Shareholders Meeting and Participation at Investor Conferences

 Sigma-Aldrich Corporation Announces Webcasts of Annual Shareholders Meeting
                  and Participation at Investor Conferences

PR Newswire

ST. LOUIS, April 30, 2013

ST. LOUIS, April 30, 2013 /PRNewswire/ -- Sigma-Aldrich Corporation (NASDAQ:
SIAL) will hold its 2013 Annual Shareholders Meeting on Tuesday, May 7, 2013
at 11:00 AM Central Time at the Sigma-Aldrich Corporation Life Science and
High Technology Center located at 2909 Laclede Avenue, St. Louis, MO.
Presenters will include: President and CEO, Rakesh Sachdev; and Executive
Vice-President, Chief Financial Officer and Treasurer, Jan Bertsch.

Audio Call Dial-In Information:
Domestic: (877) 303-8022
International: (973) 200-3362
Conference ID: 45736971

Interested parties may listen via live audio broadcast and view the
presentation slides over the internet, available at Users can click the "Webcast" icon to
access this file. A replay of the meeting and the presentation slides will be
posted on the Company's website following the meeting.

The Company will present and webcast presentations at the following investor
conferences in May:

  oBaird 2013 Growth Stock Conference on Thursday, May 9, 2013 in Chicago,
    IL, presenting at 10:55 AM (Central).
  oBank of America/Merrill Lynch 2013 Health Care Conference on Thursday, May
    16, 2013 in Las Vegas, NV, presenting at 8:00 AM (Pacific).
  oUBS Global Healthcare Conference on Tuesday, May 21, 2013 in New York, NY,
    presenting at 3:30 PM (Eastern).

Interested parties may listen to live audio and replays of these presentations
by using the links posted at

About Sigma-Aldrich: Sigma-Aldrich (NASDAQ: SIAL) is a leading Life Science
and High Technology company. Its biochemical and organic chemical products
and kits are used in scientific genomic research, biotechnology,
pharmaceutical development, the diagnosis of disease and as key components in
pharmaceutical, diagnostics and high technology manufacturing. The company
has customers in life science companies, university and government
institutions, hospitals and industry. Over one million scientists and
technologists use its products. Sigma-Aldrich operates in 38 countries and
has 9,000 employees providing excellent service worldwide. The company is
committed to accelerating customer success through innovation and leadership
in Life Science, High Technology and Service. For more information about
Sigma-Aldrich, please visit its award winning website, at

SOURCE Sigma-Aldrich

Contact: Debi Fakes, Investor Relations, Sigma-Aldrich Corporation,
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